For words that only have 3 letters, there is not any 4th letter. For example with the word “incorporate”, there aren't any more letters Later on and therefore have to be the word "include". The word “addict” is during the BIP39 wordlist however , you might have utilized “addi” for http://remingtonjszi611.almoheet-travel.com/from-words-to-wide-range-how-to-efficiently-use-bip39-passphrases-for-your-copyright-wallets